node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "net/http"
   6         _ "net/http/pprof"
   7         "time"
   8
   9         log "github.com/sirupsen/logrus"
  10         cmn "github.com/tendermint/tmlibs/common"
  11         dbm "github.com/tendermint/tmlibs/db"
  12         browser "github.com/toqueteos/webbrowser"
  13
  14         "github.com/bytom/accesstoken"
  15         "github.com/bytom/account"
  16         "github.com/bytom/api"
  17         "github.com/bytom/asset"
  18         "github.com/bytom/blockchain/pseudohsm"
  19         "github.com/bytom/blockchain/txfeed"
  20         cfg "github.com/bytom/config"
  21         "github.com/bytom/consensus"
  22         "github.com/bytom/crypto/ed25519/chainkd"
  23         "github.com/bytom/database/leveldb"
  24         "github.com/bytom/env"
  25         "github.com/bytom/mining/cpuminer"
  26         "github.com/bytom/mining/miningpool"
  27         "github.com/bytom/netsync"
  28         "github.com/bytom/protocol"
  29         "github.com/bytom/protocol/bc"
  30         "github.com/bytom/types"
  31         w "github.com/bytom/wallet"
  32 )
  33
  34 const (
  35         webAddress               = "http://127.0.0.1:9888"
  36         expireReservationsPeriod = time.Second
  37         maxNewBlockChSize        = 1024
  38 )
  39
  40 type Node struct {
  41         cmn.BaseService
  42
  43         // config
  44         config *cfg.Config
  45
  46         syncManager *netsync.SyncManager
  47
  48         evsw types.EventSwitch // pub/sub for services
  49         //bcReactor    *bc.BlockchainReactor
  50         wallet       *w.Wallet
  51         accessTokens *accesstoken.CredentialStore
  52         api          *api.API
  53         chain        *protocol.Chain
  54         txfeed       *txfeed.Tracker
  55         cpuMiner     *cpuminer.CPUMiner
  56         miningPool   *miningpool.MiningPool
  57         miningEnable bool
  58 }
  59
  60 func NewNode(config *cfg.Config) *Node {
  61         ctx := context.Background()
  62         initActiveNetParams(config)
  63         // Get store
  64         txDB := dbm.NewDB("txdb", config.DBBackend, config.DBDir())
  65         store := leveldb.NewStore(txDB)
  66
  67         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  68         accessTokens := accesstoken.NewStore(tokenDB)
  69
  70         // Make event switch
  71         eventSwitch := types.NewEventSwitch()
  72         _, err := eventSwitch.Start()
  73         if err != nil {
  74                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
  75         }
  76
  77         txPool := protocol.NewTxPool()
  78         chain, err := protocol.NewChain(store, txPool)
  79         if err != nil {
  80                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  81         }
  82
  83         var accounts *account.Manager = nil
  84         var assets *asset.Registry = nil
  85         var wallet *w.Wallet = nil
  86         var txFeed *txfeed.Tracker = nil
  87
  88         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  89         txFeed = txfeed.NewTracker(txFeedDB, chain)
  90
  91         if err = txFeed.Prepare(ctx); err != nil {
  92                 log.WithField("error", err).Error("start txfeed")
  93                 return nil
  94         }
  95
  96         hsm, err := pseudohsm.New(config.KeysDir())
  97         if err != nil {
  98                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
  99         }
 100
 101         if !config.Wallet.Disable {
 102                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 103                 accounts = account.NewManager(walletDB, chain)
 104                 assets = asset.NewRegistry(walletDB, chain)
 105                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain)
 106                 if err != nil {
 107                         log.WithField("error", err).Error("init NewWallet")
 108                 }
 109
 110                 if err := initOrRecoverAccount(hsm, wallet); err != nil {
 111                         log.WithField("error", err).Error("initialize or recover account")
 112                 }
 113
 114                 // Clean up expired UTXO reservations periodically.
 115                 go accounts.ExpireReservations(ctx, expireReservationsPeriod)
 116         }
 117         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 118
 119         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 120
 121         // run the profile server
 122         profileHost := config.ProfListenAddress
 123         if profileHost != "" {
 124                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 125                 // go tool pprof http://profileHose/debug/pprof/heap
 126                 go func() {
 127                         http.ListenAndServe(profileHost, nil)
 128                 }()
 129         }
 130
 131         node := &Node{
 132                 config:       config,
 133                 syncManager:  syncManager,
 134                 evsw:         eventSwitch,
 135                 accessTokens: accessTokens,
 136                 wallet:       wallet,
 137                 chain:        chain,
 138                 txfeed:       txFeed,
 139                 miningEnable: config.Mining,
 140         }
 141
 142         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 143         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 144
 145         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 146
 147         return node
 148 }
 149
 150 func initActiveNetParams(config *cfg.Config) {
 151         var exist bool
 152         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 153         if !exist {
 154                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 155         }
 156 }
 157
 158 func initOrRecoverAccount(hsm *pseudohsm.HSM, wallet *w.Wallet) error {
 159         xpubs := hsm.ListKeys()
 160
 161         if len(xpubs) == 0 {
 162                 xpub, err := hsm.XCreate("default", "123456")
 163                 if err != nil {
 164                         return err
 165                 }
 166
 167                 wallet.AccountMgr.Create(nil, []chainkd.XPub{xpub.XPub}, 1, "default")
 168                 return nil
 169         }
 170
 171         if _, err := wallet.AccountMgr.ListAccounts(""); err != nil {
 172                 return err
 173         }
 174
 175         return nil
 176 }
 177
 178 // Lanch web broser or not
 179 func lanchWebBroser() {
 180         log.Info("Launching System Browser with :", webAddress)
 181         if err := browser.Open(webAddress); err != nil {
 182                 log.Error(err.Error())
 183                 return
 184         }
 185 }
 186
 187 func (n *Node) initAndstartApiServer() {
 188         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens)
 189
 190         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 191         env.Parse()
 192         n.api.StartServer(*listenAddr)
 193 }
 194
 195 func (n *Node) OnStart() error {
 196         if n.miningEnable {
 197                 n.cpuMiner.Start()
 198         }
 199         n.syncManager.Start()
 200         n.initAndstartApiServer()
 201         if !n.config.Web.Closed {
 202                 lanchWebBroser()
 203         }
 204
 205         return nil
 206 }
 207
 208 func (n *Node) OnStop() {
 209         n.BaseService.OnStop()
 210         if n.miningEnable {
 211                 n.cpuMiner.Stop()
 212         }
 213         n.syncManager.Stop()
 214         log.Info("Stopping Node")
 215         // TODO: gracefully disconnect from peers.
 216 }
 217
 218 func (n *Node) RunForever() {
 219         // Sleep forever and then...
 220         cmn.TrapSignal(func() {
 221                 n.Stop()
 222         })
 223 }
 224
 225 func (n *Node) EventSwitch() types.EventSwitch {
 226         return n.evsw
 227 }
 228
 229 func (n *Node) SyncManager() *netsync.SyncManager {
 230         return n.syncManager
 231 }
 232
 233 func (n *Node) MiningPool() *miningpool.MiningPool {
 234         return n.miningPool
 235 }